It is a simple strategy to show a possible combination of a simple moving average and Fast-SMA published earlier.
It goes long only when the price is over sma 50 and FSMA and closes the trade when it crosses down FSMA. The same logic is for the shorting.
At this time this strategy does not take in count slow crossing and fuss that needs additional confirmation. I described such cases in Fast SMA script.
The strategy does not repaint. Bars color when a candle closes.